Gravel Ballasted Roof System

Although the primary purpose of ballast is to weigh down the roofing materials it also offers similar protective benefits as described above.

Gravel ballasted roof system.

Most ballasted roof systems use gravel stone that is similar to what would be used in landscaping. They are known for their installation speed and pleasing aesthetics. Ballast paver used as a perimeter ballast 10 feet minimum guards against gravel scour and protects the roofing system at it s most vulnerable area. Gravel ballasted roofs with sikaplan or sarnafil single ply membranes are conventionally installed.

Somebody walking on the roof will undoubtedly step on the ballast and put a hole in the membrane. The firestone epdm ballasted system is an economical epdm roofing system suitable for a wide variety of buildings it can be applied on any building that can accommodate the extra load of the ballast and where the roof slope does not exceed 10. For built up roofing the gravel was generally 25 5 inches in diameter. Simply put a ballasted roof is easy to install and basically guaranteed maintenance work for a roofer.

Firestone epdm ballasted system application. Gaf energyguard insulations must be used in roofing systems to be guaranteed by gaf. Ballasted green systems. Insulation as an acceptable substrate for gaf roof systems.

Ballasted roof systems are simultaneously a roofer s best friend and arch nemesis. There are two main types of burs or tar and gravel roofing systems modified bitumen roofs which are a mix of asphalt and rubber with a layer of gravel on top and ballast roofing which is a different style of larger gravel applied on top of a single ply roofing system. However other ballasted systems use pavers which are easier to walk on and can be. Fully ballasted application ballast paver has been wind tunnel tested at colorado state university and far exceeds the performance of gravel ballast and other paver systems.

For all systems the top layer may be a cover board as follows. The single ply membrane and other roof components including thermal insulation are loose laid. For ballasted systems a minimum of two layers of insulation are required for extended length guarantees. Ballasted roof systems have been installed since the early 1970 s.

The stones used in ballasted roofing are generally 1 5 2 5 inches in diameter and applied in a thicker layer. The gravel used in built up roofing what the roofing contractors were used to was not the same as that used in a ballasted roof. Gravel on a ballast roof system. Ballast is a different style of gravel which is applied to single ply roofing systems.

Holes mean roof leaks and roof leaks mean call the roofer.